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Question
The velocity factor for precision metallic gears cut with high accuracy and operating at velocities up to 20 m/s is equal to
Options:
A .  0.75/ (0.75 + √v)
B .  3/ (3 + v)
C .  4.5/ (4.5 + v)
D .  6/ (6 + v)
Answer: Option A

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